Askar Reducer 0.6x for 103APO (85522)
Askar Reducer 0.6x for 103APO (85522)
410.7 CHF
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The 0.6x reducer is designed to shorten the focal ratio of the Askar 103APO to f/4, while also enlarging and flattening the image field. This four-lens optical system creates a 44 mm image circle, making it ideal for full-frame cameras. The reducer weighs 980 grams and offers a flange focal distance of 55 mm from the M48 thread. On the camera side, three threads are available: M68x1, M54x0.75, and M48x0.75. An integrated 2" filter thread (M48x0.75) allows for the direct use of filters.
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Astro-Physics Reducer 0.67x 2" (51284)
Astro-Physics Reducer 0.67x 2" (51284)
219.94 CHF
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The Astro Physics Tele Compressor was originally designed for telescopes with a focal ratio of f/9 or higher, but practical use has shown that it also works exceptionally well with GSO’s RC telescopes. It delivers sharp star images across a 29 mm diameter field. When used with an SLR camera, the required spacing can be achieved using a TS Optics 2"/T2 focal adapter, providing the standard 55 mm distance to the camera sensor needed for DSLRs with a T2 ring.
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Astronomik Filters H-alpha 12nm 50mm (62750)
Astronomik Filters H-alpha 12nm 50mm (62750)
238.64 CHF
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The H-alpha filter transmits light at a wavelength of 656 nm, making it an excellent choice for narrowband H-alpha astrophotography. It delivers high-contrast images and reveals rich nebular details, even in areas with strong light pollution. These 50 mm filters are compatible with all 50 mm filter wheels from ZWO, QHY, QSI, Starlight Xpress, SBIG, Moravian, and Atik. The filter design includes a protective ring and blackened edges to prevent stray light, provide mechanical protection, and make handling easier. 
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Astronomik Filters HSO 12nm 1,25" (85948)
Astronomik Filters HSO 12nm 1,25" (85948)
268.56 CHF
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H-alpha Filter: This filter is designed for photographing hydrogen nebulae both in areas with artificial light pollution and at dark-sky locations. It significantly enhances the contrast between H-alpha emitting objects and the sky background. With a narrow half-width of 12 nm and high transmission close to 100% in the H-alpha line, it provides much greater contrast than broadband filters. The 12 nm half-width is optimized for typical CCD and CMOS sensors.
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Astronomik Filters HSO 12nm 2" (85949)
Astronomik Filters HSO 12nm 2" (85949)
567.8 CHF
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H-alpha Filter: This filter is designed for photographing hydrogen nebulae, whether you are in areas with artificial light pollution or under dark skies. It significantly boosts the contrast between H-alpha emitting objects and the sky background. With its narrow 12 nm half-width and nearly 100% transmission at the H-alpha line, this filter provides a much greater contrast increase than broadband filters. The 12 nm half-width is ideally suited for typical CCD and CMOS sensors.
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Astronomik Filters HSO 12nm 31mm (85950)
Astronomik Filters HSO 12nm 31mm (85950)
328.41 CHF
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H-alpha Filter: This filter is designed for photographing hydrogen nebulae, whether you are in areas with artificial light pollution or under dark skies. It significantly enhances the contrast between H-alpha emitting objects and the background sky. Thanks to its narrow 12 nm half-width and almost 100% transmission at the H-alpha line, this filter provides much greater contrast than broadband filters. The 12 nm half-width is specifically optimized for use with typical CCD and CMOS sensors.
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Astronomik Filters HSO 12nm 36mm (85951)
Astronomik Filters HSO 12nm 36mm (85951)
373.3 CHF
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H-alpha Filter: This filter is ideal for photographing hydrogen nebulae, whether you are in areas with strong artificial light pollution or under dark skies. It greatly enhances the contrast between objects that emit H-alpha light and the background sky. With its narrow 12 nm half-width and nearly 100% transmission at the H-alpha wavelength, this filter achieves significantly higher contrast than broadband filters. The 12 nm half-width is perfectly suited for typical CCD and CMOS sensors.
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Astronomik Filters HSO 12nm 50mm (85952)
Astronomik Filters HSO 12nm 50mm (85952)
597.72 CHF
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H-alpha Filter: This filter is ideal for photographing hydrogen nebulae from both light-polluted areas and dark sky locations. It greatly enhances the contrast between objects glowing in H-alpha light and the sky background. With a narrow 12 nm half-width and nearly 100% transmission at the H-alpha wavelength, this filter offers significantly greater contrast than broadband filters. The 12 nm half-width is optimized for use with typical CCD and CMOS sensors.
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Astronomik Filters HSO 6nm 1.25" (85953)
Astronomik Filters HSO 6nm 1.25" (85953)
373.3 CHF
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H-alpha Filter: This filter is designed for photographing hydrogen nebulae from both light-polluted areas and dark sky locations. It greatly increases the contrast between objects that emit H-alpha light and the background sky. SII Filter: The SII filter is suitable for imaging sulfur emission regions, whether you are in areas with strong light pollution or under dark skies. It enhances the contrast between objects glowing in the sulfur line at 672 nm and the sky background.
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Astronomik Filters HSO 6nm 2" (85954)
Astronomik Filters HSO 6nm 2" (85954)
867.03 CHF
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H-alpha Filter: This filter is ideal for photographing hydrogen nebulae, whether you are working in light-polluted areas or under dark skies. It significantly enhances the contrast between objects that emit H-alpha light and the background sky. SII Filter: The SII filter is suitable for imaging sulfur emission regions from both light-polluted locations and dark-sky sites. It greatly increases the contrast between objects glowing in the sulfur line at 672 nm and the sky background.
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Astronomik Filters HSO 6nm 31mm (85955)
Astronomik Filters HSO 6nm 31mm (85955)
448.11 CHF
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H-alpha Filter: This filter is perfect for photographing hydrogen nebulae, whether you are in light-polluted areas or under dark skies. It greatly enhances the contrast between objects that emit H-alpha light and the background sky. SII Filter: The SII filter is designed for imaging sulfur emission regions, both from light-polluted locations and dark-sky sites. It dramatically increases the contrast between objects glowing in the sulfur line at 672 nm and the sky background.
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Astronomik Filters HSO 6nm 36mm (85956)
Astronomik Filters HSO 6nm 36mm (85956)
560.32 CHF
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H-alpha Filter: This filter is ideal for photographing hydrogen nebulae, whether you are working in light-polluted areas or under dark skies. It significantly enhances the contrast between objects that emit H-alpha light and the background sky. SII Filter: The SII filter is designed for capturing sulfur emission regions, suitable for both light-polluted locations and dark-sky sites. It dramatically increases the contrast between objects glowing in the sulfur line at 672 nm and the sky background.
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Astronomik Filters HSO 6nm 50mm (85957)
Astronomik Filters HSO 6nm 50mm (85957)
867.03 CHF
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H-alpha Filter: This filter is designed for photographing hydrogen nebulae in both light-polluted environments and dark-sky locations. It greatly enhances the contrast between objects that emit H-alpha light and the surrounding sky background. SII Filter: The SII filter is ideal for capturing sulfur emission regions, whether you are shooting from light-polluted areas or dark skies. It significantly increases the contrast between objects glowing in the sulfur line at 672 nm and the sky background.
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Astronomik Filters CLS CCD XT Clip Sony alpha 7 (85677)
Astronomik Filters CLS CCD XT Clip Sony alpha 7 (85677)
209.56 CHF
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Astronomik XT filters enable you to capture sharp, beautiful star images right into the corners of the frame, even with extremely wide-angle lenses. With other Astronomik filters, image quality in the corners can be limited at short focal lengths. Although these filters use a glass plate only one millimetre thick, this thickness can cause aberrations with certain wide-angle lenses, stretching stars into lines. Astronomik XT filters are built on an ultra-thin substrate, just 0.3 millimetres thick. This thinness minimizes “star streaks” in the corners. 
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Astronomik Filters H-alpha 12nm MaxFR XT Clip EOS R XL (85741)
Astronomik Filters H-alpha 12nm MaxFR XT Clip EOS R XL (85741)
367.29 CHF
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The clip filters can be quickly and easily mounted inside the camera body without the need for any tools. You can insert or remove the filter at any time, even while on the go or at night. No modifications to the camera body are required. Removal is performed with a small hook, which is included in the package. These filters are compatible with Canon EOS R, EOS R3, EOS R5, EOS R6, EOS R6 MKII, EOS RP, EOS Ra, EOS R8, as well as APS-C models like R7, R10, R50, and R100.
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Baader Filters H-alpha/OIII/SII CMOS Narrowband 2" (70896)
Baader Filters H-alpha/OIII/SII CMOS Narrowband 2" (70896)
493.45 CHF
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H-alpha Filter: The H-alpha filter allows light with a wavelength of 656nm to pass through. It is considered the best option for narrowband H-alpha astrophotography when aiming for high-contrast images and revealing intricate nebula details, even in areas affected by strong light pollution. OIII Filter: The narrowband O-III 3nm filter is specifically designed for observing nebulae. It allows a narrow 3nm bandwidth of light centered at a wavelength of 500nm, which matches the OIII emission lines, while blocking all other wavelengths. SII Filter: The narrowband S-II 7nm filter transmits light at a wavelength of 672nm with a 3nm bandpass, making it ideal for nebula photography.
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Baader Guide scope rings BP IV 175-265mm (85667)
Baader Guide scope rings BP IV 175-265mm (85667)
486.7 CHF
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If you want to install a guide telescope in parallel to your main telescope, guide rings are the simplest and most cost-effective solution. The Guide Rings PLUS 115mm provide high build quality and all the essential features for this purpose, allowing you to mount guide telescopes such as 80mm diameter refractors. The guide scope is held securely in place, will not slip, and is protected from scratches. There are four additional milled flat surfaces with photo thread holes on the outer edge of the rings, making it easy to attach extra accessories or connect multiple rings together.
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Askar 140 F7 APO Telescope (APO140)
Askar 140 F7 APO Telescope (APO140)
1751.44 CHF
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The Askar 140 APO is a professional astrograph designed to deliver excellent performance for both experienced astrophotographers and visual observation enthusiasts. This telescope features a classic apochromatic triplet lens system with an air gap. To achieve outstanding correction of chromatic aberrations, the lenses are made from extra-low dispersion (ED) glass. The interior of the optical tube is equipped with an advanced baffle system and coated with matte paint to eliminate reflections.
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Bresser Telescope N 150/1200 Messier Hexafoc EXOS-1 (21509)
Bresser Telescope N 150/1200 Messier Hexafoc EXOS-1 (21509)
527.4 CHF
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Bresser, a traditional company, offers telescopes for ambitious beginners under the Messier name, providing excellent value for money. Messier telescope systems are designed to be expandable and upgradable, making them suitable for long-term use, even beyond the entry-level stage. The Bresser N 150/1200 features high rigidity and sharp optics. With a 150 mm aperture, it allows observation of bright nebulas deep in space.
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Bresser Telescope N 203/1200 Messier Hexafoc EXOS-2 GoTo (57556)
Bresser Telescope N 203/1200 Messier Hexafoc EXOS-2 GoTo (57556)
1170.4 CHF
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Bresser, a traditional company, offers telescopes for ambitious beginners under the Messier brand, combining excellent performance with an attractive price. The Messier telescope systems are designed to be expandable and upgradable, making them useful well beyond the beginner stage. The Messier NT-203/1200 features optics that enable observations previously out of reach in this price category. With its longer focal length and minimal obstruction, the NT-203/1200 delivers outstanding sharpness and contrast, particularly for planetary viewing.
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